基于网络药理学和体内实验验证霍山石斛治疗胃溃疡的作用机制

被引:35
作者
桂文琪
方媛
聊晓玉
孙纪
俞年军
彭代银
韩岚
机构
[1] 安徽中医药大学药学院中药复方安徽省重点实验室安徽道地中药材品质提升协同创新中心
关键词
霍山石斛; 胃溃疡; 网络药理学; 作用机制; 磷脂酰肌醇3-激酶(PI3K)/蛋白激酶B(Akt)信号通路;
D O I
暂无
中图分类号
R285 [中药药理学];
学科分类号
100806 [中药药理学];
摘要
目的:通过网络药理学方法及体内实验研究探讨霍山石斛治疗胃溃疡(GU)的作用机制。方法:从中药系统药理学数据库与分析平台(TCMSP)数据库及文献中收集建立霍山石斛的成分库,寻找其主要活性化合物,并通过TCMSP等数据库预测作用靶点。从GeneCards、在线人类孟德尔遗传数据库(OMIM)、DisGeNET等数据库中筛选GU相关基因,将成分靶点与疾病基因交集后构建蛋白质-蛋白质相互作用(PPI)网络,并进行基因本体(GO)富集分析和京都基因与基因组百科全书(KEGG)富集分析。根据预测结果采用苏木素-伊红(HE)染色法、免疫组化、酶联免疫吸附测定法(ELISA)、蛋白免疫印迹法(Western blot)、实时荧光定量聚合酶链式反应(Real-time PCR)等实验验证霍山石斛对乙酸诱导GU大鼠模型的影响。结果:筛选出霍山石斛63种有效成分,得到霍山石斛治疗GU的靶基因37个,PPI分析得到多个霍山石斛治疗GU的可能核心靶点,并通过作用于磷脂酰肌醇3-激酶(PI3K)/蛋白激酶B(Akt)、缺氧诱导因子-1(HIF-1)、肿瘤坏死因子(TNF)、核转录因子-κB(NF-κB)等信号通路和各种生物过程影响GU的发展。体内实验结果显示,霍山石斛可显著降低模型大鼠血清中白细胞介素-1β(IL-1β),白细胞介素-6(IL-6)及TNF-α等炎性因子的水平(P<0.05,P<0.01),增加溃疡边缘的胃血流量(GBF),增加溃疡边缘表皮生长因子(EGF),表皮生长因子受体(EGFR)的表达(P<0.01),显著下调GU大鼠胃组织中PI3K,Akt蛋白和mRNA的表达,上调人第10号染色体缺失的磷酸酶(PTEN)蛋白和mRNA的表达(P<0.01)。结论:网络药理学分析及动物实验结果提示,霍山石斛可以通过调节EGFR/PI3K/Akt信号通路抑制组织炎症,增加溃疡边缘的胃微循环血流,促进细胞增殖和受损胃黏膜的修复。
引用
收藏
页码:151 / 161
页数:11
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